Bake the cakes on the middle rack for about 20-25 minutes (about 30-35 minutes if using the 8x8 inch cake pan) or until a toothpick inserted into the center comes out with only a few crumbs attached. Start checking earlier rather than later. If the skewer comes out totally clean, the cakes will be on the dry side. Of course, the addition of soaking with the caramel sauce will help. A little chocolate on the skewer is not an indication of not being under-cooked. Your oven will also affect the timing.
Salted Bourbon Caramel Sauce link. It's sooo good!
These can be stored in a sealed container in the fridge for a few days. Re-warm in a 350F oven for a few minutes and then serve as desired.
To freeze, wrap each cake with a double layer of plastic wrap and place them into a freezer bag. Now you can pull out individual servings, thaw and warm and serve, whenever the craving hits!
If replacing the flour with a gluten free blend, and you don't have a scale, make sure to fluff up the flour, use the scoop and level method. And then remove 1 1/2 tbsp per cup.